dependencies: check for 'patch'

We need patch for patch-kernel.sh, so verify that it's available
before building.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

1 files changed, 17 insertions, 0 deletions

diff --git a/toolchain/dependencies/dependencies.sh b/toolchain/dependencies/dependencies.sh
index 9e2e50b4c..a3ee111c0 100755
--- a/toolchain/dependencies/dependencies.sh
+++ b/toolchain/dependencies/dependencies.sh
@@ -297,6 +297,12 @@ fi;
 echo "gettext installed:				Ok"
 
 
+#############################################################
+#
+# check build system 'makeinfo'
+#
+#############################################################
+
 if ! which makeinfo > /dev/null ; then \
 	echo "makeinfo installed:		    FALSE"
 	/bin/echo -e "\n\nMost likely some packages will fail to build their documentation"
@@ -306,6 +312,17 @@ else
 	echo "makeinfo installed:				Ok"
 fi
 
+#############################################################
+#
+# check build system 'patch'
+#
+#############################################################
+if ! which patch > /dev/null ; then \
+	echo "patch installed:				FALSE"
+	/bin/echo -e "\n\nYou must install 'patch' on your build machine\n"; \
+	exit 1; \
+fi;
+echo "patch installed:				Ok"
 
 #############################################################
 #